Vehicle liftgate



FIG. 1 is a front and right perspective view of a vehicle liftgate showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a left elevation view thereof, the right elevation view is a mirror image of the left elevation view; and,

FIG. 4 is a top view thereof.

The broken lines shown in the drawings depict portions of the vehicle liftgate that form no part of the claimed design. 

CLAIM The ornamental design for a vehicle liftgate, as shown and described. 